Secunia Research: Microsoft Windows Embedded OpenType Fonts Glyphs Parsing Information Disclosure Vulnerability

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                    Secunia Research 2017/11/20

 Microsoft Windows Embedded OpenType Fonts Glyphs Parsing Information
                      Disclosure Vulnerability

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Flexera Software...............................................8
Verification.........................................................9

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1) Affected Software

* Microsoft Windows 7

* Microsoft Windows Server 2008

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2) Severity

Rating: Moderately Critical
Impact: Information Disclosure
Where:  Remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in Microsoft Windows,
which can be exploited by malicious people to disclose certain
information.

The vulnerability is caused due to an error within the Microsoft
Embedded OpenType (EOT) engine when parsing embedded fonts glyphs and
can be exploited to disclose certain data.

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4) Solution

Apply update.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11835

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5) Time Table

2017/11/02 - Vendor notified about vulnerability.
2017/11/02 - Vendor response.
2017/11/15  Vendor status update.
2017/11/16  Detected potential patched status and inquired regarding
             effect of November 2017 patch release on reported
             vulnerability.
2017/11/17  Vendor status update: Vulnerability is fixed by November
             2017 patch release.
2017/11/17  Updated Secunia Advisory SA80039.
2017/11/20 - Public disclosure of Secunia Research Advisory. Updated
             Secunia Advisory SA80039 due to a remote vector being
             applicable.

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6) Credits

Hossein Lotfi, Secunia Research at Flexera.

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
the CVE-2017-11835 identifier for the vulnerability.

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8) About Flexera

Flexera  helps application  producers and enterprises  increase
application usage and the value they derive from their software.

http://www.flexerasoftware.com/enterprise/company/about/

Flexera delivers  market-leading  Software  Vulnerability Management
solutions  enabling  enterprises  to  proactively  identify  and
remediate software vulnerabilities, effectively reducing the risk of
costly security breaches.

http://www.flexerasoftware.com/enterprise/products/

Flexera  supports  and  contributes  to  the community in several
ways.  We  have  always  believed  that  reliable  vulnerability
intelligence and tools to aid identifying and fixing vulnerabilities
should be  freely available  for  consumers  to ensure that users,
who care about their online privacy and security, can stay secure.
Only a few vendors address vulnerabilities in a proper way and help
users get updated  and  stay secure.  End-users (whether private
individuals or businesses) are otherwise left largely alone,  and
that is why back in 2002, Secunia Research started investigating,
coordinating  disclosure  and  verifying software vulnerabilities.
In  2016,  Secunia Research  became  a  part  of  Flexera and today
our in-house software vulnerability research remains the core  of
the  Software  Vulnerability  Management  products  at Flexera.

https://secuniaresearch.flexerasoftware.com/community/research/

The  public Secunia Advisory database  contains  information  for
researchers, security enthusiasts, and consumers to lookup individual
products and vulnerabilities and assess, whether they need to take
any actions to secure their systems or whether a given vulnerability
has already been discovered

https://secuniaresearch.flexerasoftware.com/community/advisories/

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9) Verification

Please verify this advisory by visiting the Secunia Research website:
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-17/

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